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J. M. STARK. Spring Bed Bottom.

No. 232,657. Patented Sent. 28,1880.

N. PETERS. PROT6-LTHOGRAFHER, WASMXNGTON. D

. UNITED STATES PATENT QFFICEO JAMES M. STARK, OF DETROIT, MICHIGAN,ASSIGNOR OF ONE-HALF OF HIS RIGHT TO JANE A. REEVES, OF SAME PLACE.

S PRING BED-BOTTOM.

SPECIFICATION formingpart of Letters Patent No. 232,657, dated September28, 1880.

Application filed January 8, 1880. i

To all whom it may concern:

Be it known that I, JAMES M. STARK, of Detroit, in the county of Wayneand State of Michigan, have invented an Improvement in SpringBed-Bottoms, of which the following is a specification.

The nature of my invention relates to new and useful improvements in theconstruction of spring bedbottoms; an ithe invention consists in thepeculiar construction and arrangement of parts, all as more fullyhereinafter set; forth and claimed.

Figure 1 is a perspective of my improved device. Fig. 2 is a bottomplan.

In the accompanying drawings, which form a part of this specification, Arepresents a frame wherein the cross-ties B are halved in and secured tothe ends of the side rails. D is a series of eye-hooks which hook overthe pieces B, and are secured thereto by staples E on the top and bottomof said pieces B, with the eyes projecting inward from the top of saidpieces. Hooked into these eyes, at each end of the device, is the seriesof coil-sprin gs 2 5 F, and these springs, at one end, are connectedwith those at the opposite end by a series of wire loops, G H, thelatter being one-half the length of the former, and hooked together, asshown in the drawings, thereby forming a 0 springbottom of greatelasticity, and presenting no points for the secretion of vermin.

I employ braces I, as shown in Fig. 2, said braces being secured attheir ends to the side rails, and the loop portion of said braces being5 secured to the under side of the cross-pieces B, at three differentpoints, as shown at a b c.

It will be observed that the central supports for the bed consist of thewire loops or stirrups H, each extending half the length be- 0 tween thehead and foot rails, and provided with hooks a, at one end, engagingwith the spiral spring F, and parts 0, bent rightangularly to the sidesof the'stirrups, and eriinped or bent at b to engage with the hooks toof a 1,5 second stirrup, H, the bent portion c of the latter beingcrimped to receive the hooks of the spiral springs F, attached to theopposite end rail of the bed-bottom.

The side wires, G, are provided each with a hook engaging with ahook atthe end of the spiral spring F, the opposite end of the wire G beingbent right-angularly, and bent or crimped to receive the hooks ot' thespiral spring F, at the opposite end of the bottom, and then bent againright-angularly, and its hooked end made to engage with one of thecrimps in the half-stirrup H.

By this construction a broad rigid bearingsurface for the'bed isobtained, and by the interlocking or engagement of the ends of thestirrups H and wires Gr all lateral movement of the wire is avoided, andeach pair of interlocked stirrups is independent of the others, so thatany break in one set of Wires will not affect another set, as in thecase where a continuous wire is employed. The spiral springs aresecurely held in place when attached to hooked staples passing aroundthe end rails, and firmly connected therewith.

It will also be observed that in my construction the tension of thespiral spring is exerted to turn or twist the end rails on their axes.This is counteracted by the braces I, applied to the under face of thebed-bottom and attached to the end and side rails.

What I claim as myinvention is In a spring bed-bottom, the combination,with the frame A, having the eyehooks D secured to its end rails, B, ofthe spiral spring F, having hooked ends, independent stirrups H, havinghooks to and crimps I), side wires,

G, having hooked ends and erimped, as set forth, and braces I I, appliedto the under face of the frame and secured to the side and end rails,substantially as described, and for the purpose set forth.

In witness that I claim the above I hereby affix my signature this 1stday of December, 1879.

JAMES M. STARK.

In presence of CHARLES J. HUNT, H. S. SPRAGUE.

